Although there is no proof of who had killed Claire or either it was just an accident. In my opinion I think Irene pushed her out the window. Some quotes that may bring even a slight thinking to maybe it was Irene are..”It was an accident, terrible accident,” (91) and “it as that smile that maddened Irene. She ran across the room, her terror tinged with ferocity, and laid a hand on Clare’s bare arm” (90-91).
Professor Lisa Brundage